JPH08133452A - Method for treating dropped ore on belt conveyor - Google Patents

Abstract

PURPOSE: To provide a method for treating dropped ores on a belt conveyor capable of realizing the unmanned work to treat the dropped ore over the whole length of the conveyor, preventing the secondary scattering of the deposited dropped ore powder on the floor of the conveyor, and treating the dropped ores according to the size of the collected ore powder. CONSTITUTION: A lower belt 11b is reversed on a head side of a belt conveyor 10, and the reversed lower belt 11b is driven forward on a tail side of the belt conveyor 10. The dropped ore powder on the floor below the region (a) before the reversing on the head side of the lower belt 11b and below the region (b) alter the forward driving on the tail side is collected in a water collecting pit 31 through the automatic water washing, and the lump and the powder are respectively collected after separating the lump from the powder.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt conveyor mine treatment method, and more particularly, it enables unmanned mine treatment processing over the entire length of a conveyor and also enables the treatment of accumulated mine powder on the floor where the conveyor is installed. TECHNICAL FIELD The present invention relates to a belt conveyor mine treatment method that can prevent secondary scattering and can mine the collected mine powder according to the size.

[0002]

2. Description of the Related Art In steel mills, a belt conveyor is often used for transporting pig iron raw materials. However, due to the structure of rotating endless belts, the back belt adhesion powder is inevitably formed on the floor below the belt conveyor. The fallen ore powder that has fallen off is accumulated like a belt along the routing of the belt. Accumulated mineral powder is
Secondary scattering causes deterioration of the environment in the factory. Therefore, workers used scooping work or small shovel trucks to collect the wastes, which were then loaded onto trucks and transported to the yard.

However, since a large number of workers are required for this falling slag processing work and the workability is poor, as a conventional solution to this problem, for example, Japanese Patent Laid-Open No. 61-273411.
"Conveyor installation floor surface cleaning method and device",
Known are those disclosed in Japanese Patent Laid-Open No. 50-43680, "Conveyor falling powder carry-out apparatus", and Japanese Patent Laid-Open No. 49-110069, "Recovery apparatus for falling powder on a conveyor".

In the conventional means, a large number of scrapers are arranged between the conveyor and the floor surface at a predetermined distance from each other, and the lower ends of the scrapers are arranged in parallel with each other in contact with the floor surface, and they are synchronously moved in the same direction. By doing so, scraping of falling mine powder → rising of scraper → returning to the same → falling down is repeated, thereby simplifying and automating the cleaning equipment of the conveyor falling mine. In addition, the conventional means is to collect the fallen ore powder that has fallen and accumulated near the end of the belt conveyor that transfers the granular material with a bucket truck that stands by immediately below it, and place this bucket truck on the loading platform of the unloading vehicle. It will be carried out as it is. Further, the conventional means of, has a rotating ring that is externally inserted on the belt conveyor and has a scraper fixed to the inner peripheral surface at predetermined intervals, and by rotating the rotating ring by a drive unit, The fallen ore powder is sequentially scraped up by each scraper and dropped by its own weight from the top of the ring onto the front belt.

[0005]

However, since the above-mentioned conventional means has a structure in which a large number of scrapers are moved in synchronism with each other, it is arranged on a conveyor arranged in a steel mill having a length of several hundred meters or more. In order to do so, there is a great problem in terms of design and cost, and further, there is a problem in that the scraped down ore powder requires human intervention and transportation as before.

Further, in the conventional means, since the height of the belt conveyor is not so high as, for example, about 800 mm, the location where the bucket truck is arranged is limited to some extent, which makes it impossible to recover the whole orefall. . In addition, there is a problem that manual intervention is partially necessary for collecting and transporting the fallen ore powder by the bucket truck. Further, in the conventional means, there is a problem that the area where the falling ring can be recovered by the rotating ring is limited, and the entire long belt conveyor cannot be recovered. Moreover, in any of these cases, the conventional means of any one of the above is a piece of fallen mineral, regardless of the size of the fallen ore, such as lump or powder.
After that, sieving and crushing treatments were performed, and it was reused in the sintering process.

The present invention has been made in view of the above circumstances, and it is possible to unmanned the processing of falling mine processing over the entire length of the conveyor, prevent the secondary scattering of the accumulated falling mine powder on the floor where the conveyor is installed, and collect it. It is an object of the present invention to provide a method of processing falling rocks of a belt conveyor, which is capable of processing falling rocks according to their size.

[0008]

A method according to the above-mentioned object.
The method of falling mine treatment of a belt conveyor according to, the reverse side belt is reversed on the head side of the belt conveyor, and then the reversed back belt is normally rotated on the tail side of the belt conveyor, while the head side of the back belt is rotated. The fallen ore powder that has fallen on the floor surface under the pre-reversal area and under the tail-side normal rotation area is collected in the water collecting pit by automatic water washing and collected after the agglomerate separation.

[0009]

According to the falling slag processing method of the belt conveyor as set forth in claim 1, in the area between the back belt reversing device on the head side and the back belt reversing device on the tail side, the surface on the adhering powder side is turned upside down. Since there is no falling mine, the falling mine powder that has fallen to the floor surface from the area before reversal on the head side of the back belt and the area after normal rotation on the tail side is automatically washed with water and once collected in the water collection pit. After that, the agglomerates are separated and collected respectively, so that the operation of the falling mine processing over the entire length of the conveyor can be unmanned, and the secondary fall of the accumulated falling mine powder on the floor where the conveyor is installed can be prevented and collected again. It is possible to perform falling rock treatment according to the size of the falling rock powder.

[0010]

Embodiments of the present invention will now be described with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is an overall side view of a falling slag processing apparatus to which a belt conveyor slag processing method according to an embodiment of the present invention is applied, and FIG. is there.

As shown in FIG. 1, in a belt conveyor 10 to which a method for falling belt processing of a belt conveyor according to an embodiment of the present invention is applied, an endless belt 11 includes a head side roll 12 which is a driving roll and a driven roll. Tail side roll 1
3, the back belt reversing devices 14A and 14B are arranged on the head side and the tail side of the back belt 11b, and on the floor below the head side end and the tail side end of the belt conveyor 10. Washing nozzle 30 for automatic washing
And a water collecting pit 31 is provided on the floor surface of each water washing nozzle 30 in the water jetting direction.
A sieve 32, which is an example of an agglomerate separation device, is provided in the.

As shown in FIG. 2, the back belt reversing device 14
Each of A and 14B has a pair of guide plates 14a which are inserted into the back belt 11b and are separated by a predetermined distance. Six guide rolls 14b are rotatably arranged in hexagons on each guide plate 14a. It is a thing. As shown in FIGS.
First, the back belt 11b is a head side back belt inverting device 14
A is passed between the two guide rolls 14b arranged in a twisted state.
b is inverted by 180 degrees, and the lower surface, which is the adhesion surface of the adhesion powder 26, faces upward. In this state, it is pulled back to the tail side, and when it passes through the tail side back belt reversing device 14B, it is normally rotated and returned to the original state.

Further, as shown in FIG.
Is for spraying water to the falling ore powder 16 that has fallen from the front side reverse area a on the head side of the back belt 11b and the normal rotation area b on the tail side, and causes the water to flow into the respective water collecting pits 31. The position is usually about 5 m away from the deposition site of the fallen ore powder 16 since the deposition site is near the center of the pre-inversion region a. The pressure of the water blown out from the water washing nozzle 30 at this time is set to 5 kg / cm ² in the embodiment, but the pressure is not limited to this. However, 3.0 to 6.0 kg / cm ² is preferable.
In addition, the floor surface is inclined downward by a few degrees to the side of the water collecting pit 31 so as to allow good drainage. The sieve 32 is
It is provided on the side of the water collecting nozzle 30 of the water collecting pit 31, and separates the fallen ore powder 16 dropped into the water collecting pit 31 into lumps and powder. The mesh used is 15 mm.
It is preferably φ or less. Further, the sieve 32 may be of a conveyor type and of an automatic carry-out type.

A settling tank 33 is provided at a place apart from the water collecting pit 31, and a slurry pipe 35 having a slurry pump 34 provided on the way is connected between the both 31 and 33. Further, below the settling tank 33, a slurry discharge pipe 3 having a slurry pump 36 attached midway
7 is connected.

In FIG. 1, reference numeral 33a is a side groove of the precipitation tank 33, reference numeral 38 is a slurry after lump separation, reference numeral 39 is slurry of the precipitation tank 33, and reference numeral 40 is supernatant water of the precipitation tank 33.

Next, a method of treating falling of a belt conveyor according to an embodiment of the present invention using the belt conveyor 10 will be described. As shown in FIG. 1, when the endless belt 11 is rotated by the head side roll 12, the pig iron raw material 28 on the front belt 11 a is dropped from the tip of the head side roll 12 of the belt conveyor 10. At this time, the head side roll 1
The front belt 11a folded back by 2 is the back belt 11b
Becomes Then, the fallen ore powder 16 from the back belt 11b in the folded-back pre-reversal region a is deposited on the floor surface, but is washed with water at all times or every predetermined time, or every time a predetermined amount is deposited using various sensors. It is washed away by the nozzle 30 into the water collecting pit 31 on the head side.

At this time, the fallen ore powder 16 is put into the sieve 32 and separated into lumps, and the collected lumps are conveyed to the sintering step and reused after crushing. Further, the powdery substance that has been sifted downward together with water is stored in the water collecting pit 31 as the slurry 38 after the lump separation. After that, slurry 3 after lump separation
8 is sucked up by the slurry pump 34 and settling tank 3
3, and is separated into slurry 39 and supernatant water 40. The slurry 39 is sent to the sintering process by the slurry pump 36 via the slurry discharge pipe 37, and the supernatant water 40 is discharged from the side groove 33 a of the precipitation tank 33.

Then, the back belt 11b is reversed by the head-side back belt reversing device 14A, and the back belt 11b is rotated.
The lower surface to which the adhered powder 26 has adhered faces upward and is returned to the tail side as it is. And the belt conveyor 10
When it reaches the vicinity of the end on the tail side, the lower surface on which the adhering powder 26 adheres faces downward again until it is normally rotated by the tail side back belt reversing device 14B and folded back upward by the tail side roll 13. The fallen ore powder 16 in the region b after the normal rotation is transferred to the water collecting pit 31 on the tail side by the washing nozzle 3
It is washed off with 0 and recovered as described above.

Thus, the falling belts other than the both ends of the conveyor are prevented by the back belt reversing devices 14A and 14B, and the falling rocks 16 at the both ends of the conveyor are once automatically washed with water,
After being collected in the water collection pit 31, the lumps are separated by the sieve 32 and collected respectively, so that the mine processing work over the entire length of the conveyor can be unmanned, thereby eliminating the so-called 3K work. Further, it is possible to prevent the secondary scattering of the accumulated falling ore powder 16 on the floor surface where the belt conveyor 10 is installed, thereby improving the working environment, and it is also possible to perform the falling ore treatment according to the size of the recovered fallen ore powder 16. Become.

Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and the present invention includes a design change and the like without departing from the scope of the invention. For example, in the examples, the falling ore treatment method of the belt conveyor is applied to the belt conveyor for conveying the pig iron raw material, but the present invention is not limited to this and can be adopted for conveying any other powder or granules. .

Further, the back belt reversing device, the automatic water washing device, the agglomerate separating device of the fallen ore powder, etc. are not limited to those of the structure of the embodiment, but any device can be used as long as it fulfills the respective functions. It may have a structure.

[0022]

In the method of falling mine treatment of a belt conveyor according to the first aspect of the present invention, falling mine other than both ends of the conveyor is prevented by the back belt reversing device, and the falling mine of both ends of the conveyor is automatically washed with water. Then, once collected in the water collection pit, separated into agglomerates, and then collected respectively, unmanned mine processing work over the entire length of the conveyor can be performed, thereby eliminating the so-called 3K work. In addition, the secondary scattering of the accumulated fallen ore powder on the floor surface where the belt conveyor is installed can be prevented, the working environment can be improved, and the fallen ore processing according to the size of the collected fallen ore powder can be performed.

[Brief description of drawings]

FIG. 1 is an overall side view of a falling mine processing apparatus to which a belt conveyor falling mine processing method according to an embodiment of the present invention is applied.

FIG. 2 is a perspective view of a main part of a back belt inverting device of a belt conveyor.

[Explanation of Codes] 10 Belt Conveyor 11 Endless Belt 11a Front Belt 11b Back Belt 12 Head Side Roll 13 Tail Side Roll 14A Back Belt Reversing Device 14B Back Belt Reversing Device 14a Guide Plate 14b Guide Roll 16 Falling Mineral Powder 26 Adhesive Powder 28 Made Pigment raw material 30 Water washing nozzle 31 Water collection pit 32 Sieve 33 Precipitation tank 33a Gutter 34 Slurry pump 35 Slurry piping 36 Slurry pump 37 Slurry discharge pipe 38 Slurry after lump separation 39 Slurry 40 Supernatant water a Pre-reversal region b Forward rotation region

Front page continuation (72) Inventor Norihisa Isomura 1-1, Toibata-cho, Tobata-ku, Kitakyushu-shi, Fukuoka New Nippon Steel Corporation Yawata Works

Claims (1)

[Claims] 1. The reverse side belt is reversed on the head side of the belt conveyor, and then the reversed reverse belt is normally rotated on the tail side of the belt conveyor, while the reverse side pre-reversal area on the head side of the back belt and A method of falling mine treatment on a belt conveyor, characterized in that falling mine powder that has fallen to the floor below the area after the normal rotation on the tail side is collected in a water collecting pit by automatic water washing and then collected after separating lumps of powder.